68 Ohm 0.5W Carbon Film Resistor - 5% Tolerance (Pack of 5)

Product Description 

The 68 Ohm 1/2 Watt Resistor is a robust, low-impedance passive component designed for circuits that demand higher current handling and superior thermal stability. With an upgraded 0.5W power rating, this resistor provides double the heat dissipation capacity of standard 1/4W versions, making it ideal for LED current limiting in 12V-24V systems, small motor snubbing, and transistor base biasing. Its stable carbon film construction and 5% tolerance ensure reliable electrical performance in both high-current prototyping and industrial repair applications.

Key Features

• High Power Headroom: The 0.5W rating allows for safer operation in low-ohmic paths, preventing overheating during continuous use.

• Low-Impedance Utility: Optimized for minimal voltage drops, perfect for current sensing and signal damping.

• Breadboard Compatible: Features sturdy, tin-plated axial leads designed for a secure mechanical fit in solderless breadboards.

• Instant Identification: Clearly marked with a 4-band color code (Blue, Gray, Black, Gold) for rapid manual sorting.

• Flame-Retardant Coating: Coated with a protective lacquer to enhance safety and prevent oxidation in humid environments.

Technical Details

• Maximum Working Voltage: Rated for stable operation up to 350V AC/DC in standard circuit environments.

• Overload Surge Capacity: Can withstand short-duration peak surges up to 700V without immediate failure.

• Operating Temperature Range: Reliable performance maintained across a range of -55°C to +155°C.

• Temperature Coefficient: Typically rated at ±450 ppm/°C, ensuring minimal resistance drift during thermal load.

• Dielectric Strength: Provides high insulation protection up to 500V AC between the resistive element and surroundings.

• Lead Material: Solder-plated copper-clad steel leads for maximum conductivity and mechanical pull-strength.

• Resistance Stability: Engineered to maintain values within ±3% after 1,000 hours of continuous load.

• Robust Body Construction: Larger axial size facilitates superior air convection compared to smaller 1/4W resistors.

• Environmental Compliance: Fully RoHS compliant and lead-free for modern electronic assembly standards.

• Low Parasitic Inductance: Suitable for high-speed switching power supplies and basic signal damping.

• Moisture Protection: Sealed with multiple epoxy layers to prevent oxidation of the carbon film.

• High Current Tolerance: Ideal for use in driving stages where pulse current is higher than average.

• Audio Signal Purity: Low current-noise characteristics make them suitable for power output stages in audio equipment.

• Solderability: Meets industrial standards for both manual soldering and automatic wave soldering.

• Indefinite Shelf Life: Protective lacquer ensures leads and element remain viable for long-term storage.